What is (a) The part of an axle or shaft in contact with its support, collar, or boxing; the journal. (b) The part of the support on which a journal rests and rotates called?

bearing — (Mach.) (a) The part of an axle or shaft in contact with its support, collar, or boxing; the journal. (b) The part of the support on which a journal rests and rotates. (Webster's 1913.)

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